Liquid-fuel and air burner.



N0. 689,954. Patented Dec. 3|, IQUI. A. J. FOWLER. LIQUID-FUEL ANDJHR BURNER.

(Application fiied Apr. 18, 1901.)

(No Model.)

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the city of London,in the Province of Ontario,

rrnn STATES PATET rrIcE.

ALLEN J. FOWVLER, OF LONDON, CANADA, ASSIGNOR OF ONE-HALF TO MILTON L. HOYER, OF SOUDERTON, PENNSYLVANIA.

LIQUID-FUEL AND AIR BURNER.

srncrricarrrou forming part of Letters Patent No. 689,954, dated December 31, 1901.

Application filed April 18, 190]. Serial No. 56,500. (No modeh) To ctZ Z whom it may concern.-

Be it known that I, ALLEN J. FOWLER, a citizen of the United States, and a resident of Canada, have invented certain new and useful Improvements in Liquid-Fuel and Air Burners, of which the following is a specifi cation.

My invention relates to improvements in burners in which liquid fuel is vaporized and mixed with air, so that when ignited combustion of both will take place, and has for its object to provide a burner in which the air will not only be superheated, but the flow or speed of said superheated air will be so accelerated that fine sprays or streams of superheated air by said accelerated speed or flow will become thoroughly mixed and incorporated with the superheated vapor, resulting in a perfect and complete combustion of the whole; and this invention consists of the im proved construction and novel combination of parts, as will be hereinafter first fully set forth and described, and then pointed out in the claims.

Reference being had to the accompanying drawings, Figure 1 is a side elevation of a burner apparatus embodying my invention, one-half of which, except the upper burnertube, is shown in section. Fig. 2 is a horizontal section just above the plane of the top of one of the vapor-superheating chambers, showing in dotted lines the tubes or pipes contained therein.

In the accompanying drawings the numeral 1 designates the metal base, 2 the vaporizing-chamber, in which the liquid fuel is vaporized, and 3 the superheating-chamber, in which the Vapor from the liquid fuel is superheated, one or more of which superheating-chambers may be used, as required, and in the top of each of said superheating-chambers 3 a large central burner-opening 4 is formed to permit the flame and heat from the combustion of said vapor and air to pass into said superheating-chamber.

5 5 designate safety perforations formed in the top of the superheating-chamber 3, which permit the escape of gas it any should collect in the upper part of said superheatingchamber.

6 designates a pipe through which the liquid fuel is supplied to the vaporizing-chamber 2 from the reservoir 7, and 8 a coiled pipe which conducts the vapor from the vaporizing-chamber 2 to and around in the superheating-chamber 3 to the burner-pipe 9, out of which the superheated vapor passes at the burner-tip 10.

11 designates a high-pressure air-reservoir, to which air is supplied through the pipe 12 by an air-pump (not shown) operated by hand, Water, or other means found most suitable and convenient.

13 designates a pipe extending from the high-pressure air-reservoir 11, through which pipe air of high pressure is supplied to the air-chamber 14, in which and the annular airchamber 15 said air is superheated, and said pipe 13 may be provided with an air-pressure gage, if desired, in order to readily note the pressure of the air passing to the annular airchamber 15, and 15 designates the pipe which conducts the air from the air-chamber 14 to said annular air-chamber 15.

15 designates an annular air-chamber, in the interior side of which a series of perforations 16 are formed, and said annular airchamber 15 is located immediately below and surrounds the burner-opening 4 in the superheating-chamber 3, so that as the superheated vapor from the bu rner-tip is carried by its momentum through the burner-opening 4 the superheated air of accelerated speed or flow passes in sprays or fine streams from the perforated annular air-chamber into said superheated vapor, and by said accelerated speed or flow said air becomes thoroughly in corporated and mixed with the vapor, so that when ignited at this point a perfect and complete combustion of the whole will take place.

17 designates a valve in the pipe 6, which regulates the flow of the liquid fuel to the vaporizing-chamber 2, and 18 an air-pressure regulator on the pipe 13, which regulates-the speed or flow of air from the high-pressure air-reservoir 11 to and through the air-chamber 14 and perforated annular chamber 15.

The operation is as follows: Asmall quantity of liquid fuel is ignited adjacent to the vaporizing chamber 2 and superheatingchamber 14 and under the superheating-cham= her 3, the heat from which will be suffieient I out at the burner-tip 10, its momentum as it passes out of said burner-tip being sufficient to carry it down through the opening 4, annular air-chamber 15, and into the superheating-chamber 3. The air-pressure regulator 1b is then turned to permit the air to pass from the high-pressure air-reservoir 11 to the air-chamber14,where said air is superheated, and from which chamber 14 said air is conducted to and passes out through the perforations 16 in the annular chamber 15, and said air being of high pressure in the reservoir 11 the speed or flow of said air passing out of the perforations 16 will be accelerated, and this, together with the flow or speed at which the superheated vapor passes from the burnertip 1 will thoroughly incorporate and mix said air and vapor together, so that when ignite-d at this point a perfect and complete combustion of the whole will take place.

By means of the construction above described the supply of liquid fuel and air may be very finely grad uated, and the regulation of said graduation being so readily, easily, and instantly understood and controlled the resultis that any inexperienced person can read-' ily, easily, and instantly learn to operate this b.urner,and a highpressure may be pu mped up in the air-reservoir 11, enough to last'all day, which can be reduced to any desired point by the air-pressure regulator 18, and the latter can be controlled by the operator to give a uniform pressure of air at all times. As a result this burner will give a uniform fire or degree of heat and of any degree required, according to the regulation of the supply of air and liquid fuel. Again, the air passing to the annu lar air-chamber 15, being under high pressure the speed or flow of the air as it passes out of the annular discharge-chamber 15 is not only accelerated to become thoroughly incorporated and mixed with the vapor, so that when ignited a complete and perfect combustion of the whole will take place, but the speed or flow of said air being accelerated because of the air of high pressure causing it to discharge rapidly, and the vapor having to depend on its expansion or superheating for its speed or flow as it passes out of the burnertube, a complete and perfect combustion of the vapor will be maintained.

Having thus described my invention, I claim- 1. In an apparatus of the class described, a vaporizing-chamber,asuperheating-chamber in which a central opening is formed, a coiled pipe extending from said vaporizing-chamber to and around said superheating-chamber, a burner-pipe communicating with said coiled pipe from which burner-pipeflahe vapor is discharged, in combination with an annular air= chamber, in which perforations are formed, and which is located below and extends around the openingin the superheating=chamber, and means for accelerating the speed or flow of the air-supply to said annular airchamber,substantially as and for the purpose set forth.

2. In an apparatus of the class described, a vaporizing-chamber, 2, a superheating-chamber, 3, in which an opening, 4, is formed, a coiled pipe, 8, extending from said vaporizing-chamber to and around said superheating-chamber, 3, a burner-pipe, 9, communicating with said coiled pipe and a burner-tip, 10, on said burner-pipe, in combination with an annular air-chamber, 15, in which perforations, 16, are formed, and which is located below and extends around the opening, 4, in the superheatingchamber, 3, a superheating air-chamber, 14, communicating with said annular air-chamber, l5, and means for accelcrating the speed or flow of said air to said superheating and annular air-chambers, substantially as and for the purpose set forth.

3. In an apparatus of the class described, a vaporizing-chamber, 2, a superheating-chamber, 3, in which an opening, 4, is formed, a coiled pipe, 8, extending from said vaporizing-chamber to and around said superheating-chamber 3, a burner-pipe, 9, communicating with said coiled pipe, and a burner= tip, 10, on said burner-pipe, in combination with an annular air-chamber, 15, in which perforations, 16, are formed, and which is located below and extends around the opening, 4, in the superheating-chamber, 3, a superheating air-chamber, 14, communicating with said annular air-chamber, 15, a high-pressure air-reservoir communicating with said superheating air-chamber, 14, and an air-pressure regulator on the pipe which extends from and communicates with said high-pressure airreservoir and said superheating air-chamber,

substantially as and for the purpose set forth.

ALLEN J. FOWLER.

Witnesses:

P. J. EDMUNDS, W. L. MoYER, 

